I have a live Windows network with a 2003 Server setup in a workgroup not domain. I have about 5 windows xp clients and one mac ibook g4. All the windows xp clients can share files with the 2003 server no problem. They can print, write to share, etc... I also have Serve-U FTP running on the Server 2003 machine.

Here is my problem. The mac machine can see all the shares fine but can not write anything to the shares. I keep getting the following error:
The operation cannot be completed because you do not have sufficient privileges for some of the items.

I have the same login on the mac as I do on the server (username and pw). Also the NTFS permissions are set for EVERYONE to have full control (For troubleshooting purposes).